留学生可以选择假期出外旅游。外出旅行时，一定要带上护照，注意安全，并要保管好证件和贵重物品。旅行只能在周末、节假日或寒暑假里进行，并需要提前知会你的导师。学习期间不能请假外出旅行。

For international students who would like to travel, passport is always required to be with you. Pay attention to your personal security and take good care of your credentials and belongings. International students may travel during weekends, holidays, and winter or summer vacations, but can’t ask for leave during the period of study. Those who want to travel should inform your tutor before you go.